Case Study – Analysis, Modelling, Simulation – Ultrasound-Activated Barium Titanate Nanoparticles for Regenerative Medicine
COMSOL electric-field simulation around BTNP clusters - animation
One of the most advanced examples of Electrosciences’ modelling capability comes from recent work investigating ultrasound-activated piezoelectric nanoparticles for regenerative medicine.
In an international collaboration involving Professor Cain, researchers developed nanocomposite hydrogels containing barium titanate nanoparticles (BTNPs) and graphene oxide nanoflakes to stimulate cartilage regeneration under ultrasound excitation.
A major component of this research involved the development of a sophisticated computational modelling framework using COMSOL Multiphysics finite element analysis (FEA). The simulations examined how ultrasound waves interact with piezoelectric nanoparticles, predicting the electrical potentials generated by individual nanoparticles and nanoparticle clusters.
The COMSOL models calculated:
- Piezoelectric voltage generation under ultrasound stimulation
- Local electric-field distributions surrounding nanoparticles
- Electromechanical coupling behaviour
- The influence of nanoparticle clustering on electric-field intensity
- Nanoscale interactions between smart materials and biological environments
COMSOL electric-field simulation around BTNP clusters - static
The results demonstrated that particle clustering can significantly modify local electric-field distributions, influencing cellular stimulation and tissue regeneration. Importantly, the modelling connected nanoscale electromechanical phenomena directly with experimentally observed biological responses.
This work highlights Electrosciences’ capability to apply advanced multiphysics modelling to complex real-world challenges involving smart materials, nanotechnology and biomedical engineering.
Reference
Ricotti, L., Cafarelli, A., Manferdini, C., Trucco, D., Vannozzi, L., et al., Cain, M.G., Ultrasound Stimulation of Piezoelectric Nanocomposite Hydrogels Boosts Chondrogenic Differentiation in Vitro, in Both a Normal and Inflammatory Milieu, ACS Nano, 2024, 18(3), 2047–2065. DOI: 10.1021/acsnano.3c08738.
